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Anton [14]
3 years ago
11

How did planetesimals form planets

Biology
2 answers:
Helga [31]3 years ago
5 0

when a planetary system is forming, there is a protoplanetary disk with materials from the nebulae from which the system came.

ella [17]3 years ago
4 0

Answer: Planetesimals. A planetesimal is an object formed from dust, rock, and other materials. ... The planetesimal theory is a theory on how planets form. According to the planetesimal hypothesis, when a planetary system is forming, there is a protoplanetary disk with materials from the nebulae from which the system came

Explanation:

this is the answer

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Which of the following is a function of the vertebral column? Select one: a. It supports the weight of the body. b. It allows sp
lisov135 [29]

Answer:

<h2>b. It allows spinal nerves to exit the spinal cord. </h2>

Explanation:

  • The vertebral column is an important characteristic of vertebrates.
  • The formation of the vertebral column takes place from the notochord in the vertebrate.
  • The vertebral column is also known as the spine or generally called the backbone.
  • It forms the spinal canal that is responsible to provide protection to the spinal cord.
  • The vertebral column is divided into many regions into human beings and some other organisms according to its function and position.
  • It has many functions such as protection of the spinal cord, allow passes of spinal nerves and some other.

5 0
3 years ago
Chief cells are found in glands that line the inside of the stomach. These cells secrete large amounts of enzymes to aid in food
kvv77 [185]

The correct answer is: Endoplasmic reticulum.

One of the functions of the endoplasmic reticulum is transport of secretory proteins. Synthesized proteins are transported in vesicles to the Golgi apparatus.

Gastric chief cells have a high rate of enzyme secretion such as pepsinogen and gastric lipase. It is the cell also responsible for secretion of chymosin.


5 0
3 years ago
Read 2 more answers
Negative feedback occurs when the output of a pathway ____________ input to the pathway. Feedback loops are used extensively to
Sveta_85 [38]

Answer:

Inhibits

Explanation:

Some mechanisms are essential for maintaining homeostasis in the human body. One of the most used mechanisms by our body is the negative feedback system. It causes a negative change from the initial change. As mentioned in the question, this often happens in the hypolamo-pituitary axis, such as when the adrenal cortex produces cortisol, this same cortisol inhibits the adenohypophysis and hypothalamus. It's also important to mention that deregulation in this process can lead to an undue chronic increase in cortisol and can lead to diseases such as anxiety disorder.

6 0
3 years ago
Explain how it might happen that a human offspring with 47 chromosomes could be produced
Firdavs [7]
Whenever the sperm and the egg combine, it is possible for one or the other to not split properly and bring 2 of the chromosomes instead of just 1
3 0
3 years ago
Onions are stem modifications of which of the following types?
Ira Lisetskai [31]

Answer/Explanation:

Onions are stem modifications of bulbs. Onions grow during a cold weather, but forms bulbs when the weather is warm. Onions can either be grown using seeds or through their bulbs. That is why, the stem modification of onions are bulbs. Tuber is from potatoes, whereas corm is from crocuses and gladioli.

5 0
3 years ago
Read 2 more answers
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